/**
	* css reset
 */
 html,
 body,
 div,
 span,
 applet,
 object,
 iframe,
 h1,
 h2,
 h3,
 h4,
 h5,
 h6,
 p,
 blockquote,
 pre,
 a,
 abbr,
 acronym,
 address,
 big,
 cite,
 code,
 del,
 dfn,
 em,
 img,
 ins,
 kbd,
 q,
 s,
 samp,
 small,
 strike,
 strong,
 sub,
 sup,
 tt,
 var,
 b,
 u,
 i,
 center,
 dl,
 dt,
 dd,
 ol,
 ul,
 li,
 fieldset,
 form,
 label,
 legend,
 table,
 caption,
 tbody,
 tfoot,
 thead,
 tr,
 th,
 td,
 article,
 aside,
 canvas,
 details,
 embed,
 figure,
 figcaption,
 footer,
 header,
 hgroup,
 menu,
 nav,
 output,
 ruby,
 section,
 summary,
 time,
 mark,
 audio,
 video {
   margin: 0;
   padding: 0;
   border: 0;
   font-size: 100%;
   font: inherit;
   vertical-align: baseline;
   box-sizing: border-box;
 }
 /* HTML5 display-role reset for older browsers */
 article,
 aside,
 details,
 figcaption,
 figure,
 footer,
 header,
 hgroup,
 menu,
 nav,
 section {
   display: block;
 }
 body {
   line-height: 1;
 }
 ol,
 ul {
   list-style: none;
 }
 blockquote,
 q {
   quotes: none;
 }
 blockquote:before,
 blockquote:after,
 q:before,
 q:after {
   content: '';
   content: none;
 }
 table {
   border-collapse: collapse;
   border-spacing: 0;
 }
 p {
   margin-bottom: 0;
 }
 /*包含以下五种的链接*/
 a,
 a:link,
 a:visited,
 a:hover,
 a:active,
 a:focus {
   text-decoration: none;
 }